diff --git a/sdk/pyproject.toml b/sdk/pyproject.toml
index 9e1ab85..d00ec46 100644
--- a/sdk/pyproject.toml
+++ b/sdk/pyproject.toml
@@ -41,7 +41,7 @@ dev = [
     "pytest-asyncio>=1.4.0",
     "mypy>=2.1.0",
     "mypy-protobuf>=5.1.0",
-    "ruff>=0.15.20",
+    "ruff>=0.15.21",
     "grpcio-tools>=1.81.1",
 ]